Automatic door-closer for elevator-shafts.



, E. E. ASHLEY. AUTOMATIC DOOR CLOSER FOR ELE APPLICATION FILED D1509, 19

PATENTED MAY 28, 1907.

VATORY SHAFTS. 04.

THE mamas PEYERS co., waswmcrolv, n. c.

UNITED OFFICE.

EDWARD ASHLEY,

or NEW YORK, N. Y.

Specification of Letters Patent.

Patented May as, 1907.

Applieation filed December 9,1904=.- Serial No. 236,253,

To aZZ whomvltmay concern:

Be it known that I, EDwARDE. ASHLEY, a

citizen of the United States of America, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Automatic Door-Closers for Elevator-Shafts, of which the following is a specification.

My invention relates to an improved door closer which i ll automatically close each door to an elevator shaft as the car is moved either up or down the shaft, so as to prevent the many accidents which occur from the want of such means, and making it impossible for such doors toremain open, if accidentally left open, which so often happens, and thus leaves the door-opening unprotected so astoallow a person to walk accidentally into an open elevator shaft.

My invention consists in the novel features of construction hereinafter described and claimed. I

In order that my invention may be fully understood, 1 will proceed to describe i-twith reference tothe accompanying drawings, in WllZlOl1-- Figure 1 shows a view lookingefrom the i11 side of a part ofan elevator-shaft at a door-- opening, a sectional view of anelevator-car, and an inside view of a door showing my im-- proved automatic door-closer. Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1 looking in the direction of the arrows. Fig. 3 is an inner view of the upper car-member of the door-closer. Fig. 4 is a horizontal sec tion thereof taken on the line 4-4 of Fig. 3 looking in the direction of the arrows; Fig. 5 is a transverse section taken on the line 5-5 of Fig. 3 looking in the direction of the arrows. Fig. 6 is an inside view of theconnect ing: cam plate and adjacent strip sections of the door member of the door-closer. Fig. 7 is a rear edgeview thereof.

Referring to Figs. 1 and 2'-1 represents a floor of a building, an elevator-shaft or well,- 3 a door opening-4 a sliding door for guarding the door opening 3,and Eran elevator-car, all of which may be of any suitable construction.

6 are the oar-members and 7 the doormember of my improved door-' closer'. One of the car-members 6 is secured to the bottom of the car, while the other car-member 6 is secured to the top of the car.

Referring to Figs. 3, 4 and 5each carmember 6 comprises an inner or base plate or casting 8, formed with a longitudinal side opening 9, longitudinal bottom and top openings 10, an end recess or socket 11, and angular projections or" lugs 12 at itsends having holes 13 for the screws or bolts 14 whereby the car-member 6 is secured to the car 5. 1 5 is a removable outer or cap plate l or casting formed with a longitudinal side opening 16 coinciding with the side opening 9' of the inner plate 8 and with angular recesses 17 at its ends, corresponding in shape to'the angular projections or lugs 12 of the inner plate 8 so as to fitthe former and seat against the latter, the outer plate and in ner plate 8 being secured together by bolts 18. 1 9 is a slide block having a stem-o ening 20 and adapted to slide back and fort i inthe longitudinal side openings 9- and 16 of the \l inner plate 8 and cap plate 15 respectively, and formed with tongues 21 adapted to slide in thelongitudinal bottom and top openings 10, whereby the slide block 19 is guided in its movement and with tending rod- 22 projecting into the end recess 11.- 23 is anexpansion s ring surrounding the rod 22' and confined etween the inner end of the end recess 11 and a shoulder 24 upon the inner end of the slide-block 19. Extending through the stem opening 20 of the slide block 19 is a screw stem 25 rigidly secured by an inner nut 26 and an outer nut 27 located u on opposite sides of the slide block 19". T e shank 28 of the screw stem 25 provides an axle or journal between the inner nut 26 and the head 29 of the screwstem 25 for a wheel 30 mounted upon the shank 28, and having a concavity for the head 29 of the screw-stem 25, and a hub formed with a roller-race or socket 31 containing antifriction rollers 32 surrounding the shank- 2-5, the wheel 30 being retained in position by the head 29'of the screw stem 28. The car-members 6 are each of similar construction, but the bearing parts are reversed in position according to whether they are applied tothe' bottom or top of the car.

Referring to Figs. 1, 2, 6 and 7-the doormember 7 of my door-closer comprises a V- shaped single cam-track or rail 33' extending from both the outer corners of the sliding door 1 to the'rear edge thereof, thus providing' an extended bearingupon the rear side ofthe cam-track for the wheels 30 of the carmembers 6, which travel thereon to close the doors when they remain open or partly open, which results in the cam-track 33 lying in the path of the wheels 30 when the car passes up a rearwardly ex-.

ITO

tom and top tongues and working in the lonor down. This cam-track 33 is preferably formed of two straight inclined wrought iron angle strips 34, a connecting curved wrought iron angle plate 35, one flange of these angle prising an inner plate having longitudinal strips 34 and angle plate 35 being secured to I side, bottom and top openings and an end a shank providing an axle, and a head, and a wheel mounted upon the shank.

the door by bolts 36 surrounded by spacing recess, an outer plate having a longitudinal collars or thimbles 37, while their other side opening, a slide-block having a stem flanges provide the cam-track 33. The angle opening, and bottom and top tongues and strips'34 and angle plate 35 are secured to working in the longitudinal openings and a gether by bolts 38. Between the front edge rearwardly extending rod projecting into the of the door and the jamb I employ rubber end recess, a spring surrounding the rod bebumpers 39 to stop the jar and deaden the tween the inner end of the end recess and the noise. 1 slide-block, a stem secured in the stem open The car-members 6, as hereinbefore stated, ing of the slide-block and having a shank are placed one upon the bottom of the car providing an axle and a head, and a Wheel and one upon the top of the car at the front mounted upon the shank. of the latter and at a point about one-half l 3. The car-member of the door-closer cominch less than the width of the sliding door prising an inner plate having longitudinal from the side of the car, as shown in Fig. 2 side, bottom and top openings, an outer The reason for setting the, oar-members one plate having a longitudinal side opening, a inch less than the Width of the car door is to slide-block having a stem opening and bothave the spring strain at the center point of tom and top tongues and working in the lonthe door, thus insuring the closing of the gitudinal openings, a spring between the same, the cam-track or rail 33 being bolted slide-block and the end of the inner plate, a in the position shown in Fig. 2, and the disscrew stem having a shank, providing an tance between the car and shaft is regulated axle, and a head, inner and outer nuts securby employing the spacing collars or thimbles, ing the screw stem in the stem opening, and through which the bolts are passed of the a wheel mounted upon the shank. requisite length, allowing the wheel to strike 4. The car-member of the door-closer comthe oam-track or rail the width of the rim of prising an inner plate, having longitudinal the wheel and permitting a free passage of side, bottom and top openings, an outer the car except at the point desired. The plate having a longitudinal side opening, a spring 23 takes the concussion of the impact slide-block having a stem opening and hotof the wheels 30 with cam-track 33 and lesstom and top tongues and working in the lon ens the sound or noise when the wheel gitudinal openings, a spring between the strikes the cam-track 33 as the car ascends slide-block and the end of the inner plate, a or descends. stem having a shank, providing an axle, and My door-closer, it will be observed, is set ahead, a wheel mounted upon the shank, entirely out of the way and does not take and having a concavity for the head of the any space which it is necessary to use for any stem and a hub formed with a roller race or other purpose, so that nothing is obstructed socket, and antifriction rollers surrounding It can remain in all cases, being located on the shank within the roller race or socket. the top and bottom of the car, and can be 5. The ear-member of the door-closer comused in all kinds of buildings.- It cannot get prising an inner plate, having longitudinal out of order easily, as it is very strongly conside, bottom and top openings and angular structed, and can be readily bolted on the projections at the ends for securing the memcar and door in a satisfactory and secure er, an outer plate having a longitudinal side opening, and angular recesses at the ends corresponding to and fitting the angular proj eetion's, a slid e-block having a stem opening and bottom and top tongues and working in the longitudinal o enings, a spring between the slide-block and the end of the inner plate, a stem secured in the stem opening and hav ing a shank, providing an axle, and a head, and a wheel mounted upon the shank.

EDWARD E. ASHLEY.

Having thus described my invention, the following is what I claim therein and desire to secure by Letters Patent:

1. The car-member of the door-closer comprising an inner plate, having longitudinal side, bottom and top openings, an outer plate having a longitudinal side opening, a slide block having a stem opening and bot- Witnesses:

STEPHEN F. BAYNE, GEORGE HINDE.

gitudinal opemngs, a spring between the I slide block and the end of the inner plate, a stem secured in the stem opening and having i 2. The car-member of the door-closer com- 

